PUBLIC HEALTH ASSESSMENT
ASARCO HAYDEN SMELTER SITE
(a/k/a ASARCO INCORPORATED HAYDEN PLANT)
HAYDEN, GILA COUNTY, ARIZONA
EPA FACILITY ID: AZD008397127
September 30, 2002
Arizona Department of Health Services
Office of Environmental Health
Environmental Health Consultation Services
Under a Cooperative Agreement with the
Agency for Toxic Substances and Disease Registry
TABLE OF CONTENTS
- 1.1 Site Description and History
1.2 Site Visits
1.3 Demographics, Land Use, and Natural Resource Use
1.4 Health Outcome Data
- 4.1 Completed Exposure Pathways4.2 Potential Exposure Pathways
- 5.1 Exposure and Toxicological Evaluation
5.2 Health Outcome Data
5.3 Community Health Concerns Evaluation
5.4 ATSDR's Child Health Initiative
|ADHS||Arizona Department of Health Services|
|ADEQ||Arizona Department of Environmental Quality|
|ATSDR||Agency for Toxic Substances and Disease Registry|
|COC||contaminant of concern|
|HBGL||Health-based Guidance Levels|
|MCL||maximum contaminant level|
|mg/m3||milligrams per cubic meter|
|MRL||minimum risk level|
|PM-10||particulate matter < 10 microns in size|
|SRLs||Soil Remediation Levels|
|USEPA||United States Environmental Protection Agency|
|µg/L||micrograms per liter|
|µg/m3||micrograms per cubic meter|
|mg/kg||milligrams per kilogram|
- Detection Limit:
- the minimum concentrations that must be accurately and preciselymeasured by the laboratory and/or specified in the quality assurance plan.
- the amount of a contamination that is absorbed or deposited in the humanbody for an increment of time. A total dose is the sum of doses receivedby a person from a contaminant in a given interval resulting frominteraction with all environmental media that contain the contaminant.
- an event that occurs when there is contact at a boundary between a humanbeing and the environment with a contaminant for a specificconcentration for an interval of time. The units of exposure areconcentration multiplied by time( i.e., parts per million times number ofdays.)
- Exposure Pathway:
- the means by which a contaminant is introduced into the body i.e. dermal,inhalation, or ingestion. Also see route of exposure.
- Maximum Contaminant Level (MCL):
- enforceable drinking water standards that are protective of public healthto the extent feasible.
- Milligram Per Kilogram:
- a common basis of reporting concentrations in soils. One milligram perkilogram equals one part per million.
- Minimal Risk Level (MRL):
- an estimate of daily exposure of a human being to a chemical (inmilligrams per kilogram per day) that is likely to be without anappreciable risk of adverse non cancerous health effects over a specifiedduration of exposure.
- small, discrete, solid or liquid bodies, especially those suspended in aliquid or air medium.
- Quality Assurance:
- a planned system of activities whose purpose is to provide assurance ofthe reliability and defensibility of the data.
- Quality Control(QC):
- a routine application of procedures for controlling the monitoring process. QC is the responsibility of all those performing hands-on operations inthe filed and in the laboratory.
- Route of Exposure:
- means by which the contaminant moves through the environment by atransporting medium such as air, soil, or water. Also see exposurepathway.
- Soil Remediation Levels:
- health-based soil screening levels. SRLs protect against toxic doses of systemic toxicants.